Instruction manual

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in the telescope control software). If you now establish connection, you will prove that the control program and the
device are both operating correctly, the cables are good, and that the problem is in configuring or identifying the
proper COM port.
If you still do not connect, you may have a bad cable or connector. Try substituting another cable or adapter and
retry the connection.
User of Double Female Device. We can supply a double female adapter that accepts a telephone type connector on
each end. The device includes two small LED lamps wired onto our GRN and YEL wires. When connected into the
serial line to the DEVICE, these lamps will normally show GRN. (I.e. both the PC and the DEVICE are listening).
Each lamp will blink RED when a transmission occurs. Thus, if a normal command is sent (such as GET INFO),
one lamp will flicker RED for about a tenth of a second (look sharp—it’s quick!). Normally, in less than a second,
DEVICE will respond and the second lamp will flicker RED showing transmission back to the PC. Using these
indicators, you can determine where and in what direction the communication failure is occurring. In conditions of
high ambient light it may be difficult to see the red flicker indicating communication- so please look carefully.
If you are unable to produce a usable COM port for the DEVICE, you may require assistance either to change
internal settings in the computer (as discussed above) or to install internal cards in the PC to provide additional
COM ports as discussed above. Please feel free to call us for help.